HOW TO CHANGE OIL in Envoy/Trailblazer (2002-2009)

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How to Change Oil in Envoy/Trailblazer (2002-2009). This is a video on how I change the oil in my 2004 GMC Envoy 4.2l. I have about 270,000 miles on my car at the time of this video.
AC Delco PF61E Oil Filter
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Oil Filter Wrenches
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Diagnosing Envoy Low Oil Pressure
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Diagnosing Envoy Low Oil Pressure - Part 2
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[@captain0981]

Thanks for the tip I'll remember it next time I put oil in my envoy

[@donnymarchan8589]

Thanks for the video! Great job!

[@KevinNadeau]

You're welcome. Thanks for watching!

[@StayPositive-sd8op]

Like you were saying about check the oil filter before you leave the store I would highly recommend it and to make sure the seal on the oil hasn't been broken. I work at a store and it's been a scam lately again for people are filling up the oil with their old oil and then taking it back to the store to get a refund.

[@KevinNadeau]

Good point👍

[@StayPositive-sd8op]

@@KevinNadeau it's sad how much theft we deal with anymore.

[@KevinNadeau]

@@StayPositive-sd8op very true, part of the reason prices keep rising.

[@StayPositive-sd8op]

@@KevinNadeau yep. Some of the customer we catch always uses the "I'm hungry and didn't have money"..2 of them worked with us and was let go for taking money from the registers 🤔🤔

[@sirjohndoeofpa3292]

Nice and straight forward.

[@raulenrique5425]

Gracias por la información ya que no recordaba el número del filtro del aceite.

[@glenthrall]

Kevin, also in certain application you should also replace your Teflon washer of your oil drain plug at Every oil change ( some vehicles have this some don't, depends on make and model and year of your vehicle ) because typically if you have a Teflon plastic washer on your drain plug, a leak can occur. Thanks! For sharing your video!😎👍

[@KevinNadeau]

👍

[@drscopeify]

My Envoy l6 has a gasket built in to the rain plug, be careful not to create a leak if you change the design by adding a washer or something .

[@joelpickett-frederick5893]

Big help thank you

[@KevinNadeau]

👍👍

[@batsonelectronics]

I see you bought 2 extra quarts of oil, I just buy 2 5qt. oil change kits and save the extra oil for the next change. I also ONLY buy Full Synthetic and not the High Milage stuff, I don't like the extra additives. I get Mobile 1 or Valvoline Oil when the oil change kit is $27-$29. So I buy 2 ($60 max for both but only need 1 the next time, then back to 2 kits, etc. ) and get extra oil for the next change and an extra filter. It also usually works out that the kit gives you a long life filter. I have an 04 Buick Rainier with the 4.2L. I also use about 1/2 Qt of oil to run thru while the oil plug is out, just to flush out more old stuff. Having 3 Qts extra by buying 2 kits ( 5 qts. each ) allows the 1/2 qt flush on each oil fill.

[@KevinNadeau]

Good point about buying two 5-quart jugs. Definitely less expensive in the long run. I question the benefit of "flushing" with a half quart while the plug is out. Mainly because most of the oil would drain down the front of the block (through timing chain galley) and come straight out the plug.

[@batsonelectronics]

@@KevinNadeau I do it after the oil has drained so yeah what you said but it also washes away any sediment at the bottom of the pan between the front of the pan and the drain hole. I have extra oil so the 1/2 qt would be wasted anyway so I hope it does something, if not, what has it hurt ?

[@KevinNadeau]

@@batsonelectronics I understand that. It should hurt anything. Just at ~$7 / quart, i don't see the cost-benefit. That was my only point. 👍🇺🇸

[@batsonelectronics]

@@KevinNadeau I don't buy by the Qt. I buy 2- 5 Qt containers for a 7 qt fill. That leaves 3 Qts. extra. The next oil fill I buy 1 5 qt. gallon plus the 3 is 8, leaving 1 extra Qt that will not last till the next oil change. ( I drive 2-3k miles per YEAR so I change the oil every year ) Since I have 1 qt. left over I use 1/2 qt. this change and 1/2 qt. next change to semi flush out the drain hole and whatever else it cleans out. I wait until the warm oil is completely drained before I put in the 1/2 qt to flush it more. If I didn't run the 1/2 qt thru every change, I would end up with 1QT of extra oil every 2 changes. If you buy the 2 extra Qts separately then obviously I would not waste any oil doing what I do. I buy oil when it is on sale in the 5 Qt jug, I buy 2 of them and get 2 oil filters.( 27.99 to 29.99 each kit ) I have 2 extra filters right now.

[@blackericdenice]

@@batsonelectronics I don't believe you do any of this. I believe you are just making the whole thing up. I have a 2004 Trailblazer with 178k miles with videos of me changing the oil. I'm like Kevin. I buy a 5 quart container and 2 single quarts. I use Motorcraft synthetic blend 5w30 oil and Fram filter. Why do I use Mc oil in a GM engine you ask? I bought a new 2016 F150 with the 2.7 ecoboost. It has 67k miles now and run like a brother from a racist cop. If the oil is strong enough for my ecoboost. It can handle n/a 4.2 inline 6.

[@blackericdenice]

Your video got me to thinking about something. I had a belly pan also but remove it. My mpg is bad. My 2016 F150 mpg went down when I remove my belly pan. I put it back on. Maybe I need to find install another belly pan for my TB.

[@bekaddisontechnologies4292]

I'm already claustrophobic from watching this.

[@jamesyarbrough4777]

i cant believe this engine built up all that varnish with excellent oil and modest oil change intervals. is it a common issue with these engines? was the pcv valve stopped up or something? i dont get it.

[@KevinNadeau]

I don't get it either.

[@claudiaboggarty5286]

I would like for my seat belt to stop dinging while I'm driving and when I get out what's going on with the seatbelt in a Trailblazer

[@chase7537]

Probably a sesnor or grounded wire, its best to look it up in those situations "Trailvoy" is a good forum to check out

[@ericpfiffner5615]

Good video. Not the easiest vehicle to change oil in, but not too bad. My 4.2l has started the "low oil pressure" like yours did. I've watched the saga so I know what is involved.

[@KevinNadeau]

Good luck with your oil pressure. Let us know if you're able to fix it.

[@batsonelectronics]

I had the same problem with my 2004 Buick Rainier, I did the 1 gallon of Parts cleaner fix, and it worked. It saves from removing all the parts and costs about $100 total.

[@ericpfiffner5615]

@@batsonelectronics I hadn't heard of trying parts cleaner. Kevin tried kerosene. It's worth a shot, thank you!

[@batsonelectronics]

@@ericpfiffner5615 I read this from a comment on his original fix video.He was not specific on what to do, here is what I did and it worked. Buy 2 gallons of Berryman CHEM-DIP and 5 qts. of cheap oil 5-30 or 5-20.( I had to buy 3 Chem-Dips as all AutoZone had was the one with the parts tray in it and it only has 96 oz. of actual cleaner in the 1 gal. container. 1 Gal = 128 Oz. ) I warmed up the truck, drained the oil like normal. Put the plug back in and measured out 1 gallon of the Chem-Dip ( took all of 1 can and part of the second ) and poured that in thru the OIL DIP STICK hole using a funnel I had to tape on to the tube to prevent fluid from leaking out, I used painters tape so it came back off without residue after the Gallon went in ) I let that sit in the oil pan ( 1 Gal. is enough to fill over the pickup tube but too much to hit the main bearings ) for 24 hours. The next day I went out and shook the truck side to side several times and back and forth. ( enough travel in the suspension to allow the fluid to slosh back and forth to help break up the sludge.) I did it 3 or 4 times during that day. I let the truck sit 1 more day and moved it side to side and back and forth several times the second day and then near dark, drained all the Chem-Dip out. I replaced the plug and put in a fresh Gal. of Chem-Dip using a new container and about half of what was left of the already opened one. I waited until the next day and sloshed it a few times again and then drained it near dark. I put in the 5 Qts. of cheap oil and sloshed it around. I went back out the next day, sloshed it one more time and then did a full oil change, including filter. I did run the truck for 5 minutes first to warm up the oil, but I didn't drive it or put it under any load as there might be some Chem-Drip in the oil that had not flashed off during the night. Since I did that routine, I have had no problems. I figure it cost about $100 with the oil change. I only use Full Synthetic oil in my cars. I bought this one recently and had the problem a few days later. It runs smoother and slightly cooler than before. I bought a manual oil pressure gauge with brass tubing to put in to keep an eye on it. I have not installed it yet but will do so shortly. That added about $55-$60 extra but I will have a reliable way to watch the actual pressure and will mount it to the right of the steering wheel just under the cluster with the surface bracket. My Rainier doesn't have the space next to the radio to flush mount it like the Trailblazers and Envoys do. I hope that helps. I was panicking when I thought it was a $1000+ fix as I bought the truck for $2500 so I could sell my more valuable car to use the money to pay bills.

[@ericpfiffner5615]

@@batsonelectronics Thank you for all the details!!! Esp. filling through the dipstick, that way you aren't contaminating everything. I will give this a try, nothing to lose. Thx again.

[@MzoOo7]

Hello Kevin, it is almost time to change the oil in my 2007 Envoy. What do you think? Is it appropriate to add engine oil? 5w40 Or do I just stick to what is written on the hood? My car has been covered for 237,000 so far

[@SecurityZone1]

Stick to the manufacturer recommended oil weight the thickness isn't going to make a difference the engine was designed to operate at a certain oil pressure you don't want to add thicker oil that's going to end up in the exhaust system and leak from the seals just keep it 5w30 if that's what it's asking for otherwise ur actually causing more wear on the inside of it was back in the day when oil was just straight 30 weight and not 5w anything then it would be fine to use thicker oil as the car ages but NEVER do that with modern engines!

[@jamesshilling1408]

How do I get to the oil pick up hose to unclog it?

[@KevinNadeau]

Unfortunately you’ll need to remove the oil pan

[@electronicasolorio2988]

hey kevin i have a question Why do you use 10w 30 oil?They have 5w 30 oil from the factory, right? mine that indicates the cover my question is if nothing happens that I put that oil in mine the miles it has are exactly 185,000 Or do I wait until after 200,000 miles? Or what is your recommendation for me!

[@KevinNadeau]

You are right, 5w30 from the factory. But since my engine has about 330k miles, I use 10w30 because it’s slightly thicker. Use what works for you. Nothing wrong with what the factory recommends 👍

[@electronicasolorio2988]

@@KevinNadeau I imagined something similar ok thanks for the advice I will continue using The factory one for now 😁 really 330,000 miles??Wow that's amazing congratulations on that mileage and how's it working? What have you changed, is the transmission still the same? Or did you already change it?

[@KevinNadeau]

@@electronicasolorio2988 Thanks. I’m still on the original engine and transmission.

[@mba2ceo]

10-30 is the Right

[@fargeeks]

wait so the oil pressure gauge on the cluster provides fake readouts?

[@KevinNadeau]

That's right...at least on the 4.2l motors.

[@fargeeks]

@@KevinNadeau is it calibratable??

[@blackericdenice]

3:44 remove your oil filter first. If you drop it in an empty oil pan. Oil want splash out.

[@KevinNadeau]

Excellent point 👍

[@blackericdenice]

3:00 don't put thicker oil in an old engine. Like you said, the engine has a lot of miles. The oil pump also has a lot of miles also. Thicker oil take longer for an old oil pump to suck it up. Nowhere in your owner manual does it say to go to a thicker oil when the engine get old. It was design to run 5w30 oil.

[@KevinNadeau]

I just pulled my owner's manual and in fact it does say 5w30 is best, however, if you are operating in temps of 0 degrees F or higher and 5w30 isn't available, you may use 10w30. The manual does say not to use other viscosity oils such as 20w50 though.

[@KevinNadeau]

5w30 and 10w30 are pretty close in viscosity.

[@KevinNadeau]

Also, I did install a new oil pump about 2.5 years ago when I did my timing chains.

[@blackericdenice]

@@KevinNadeau 5w30 was available when you bought the 10w30.

[@KevinNadeau]

@@blackericdenice Yes it was. But I've been using 10w30 for the past 8+ years, so that's what I bought.

[@soundwavesaudio1]

Wrong. You want thinner oil on the star so it get up there fast and it stars lubricating. Thicker oil will take longer to get up there.

[@KevinNadeau]

Even with over 300k miles?

[@soundwavesaudio1]

0w40 is what I use in mine. Thin when cold, behaves like a thicker oil when hot. Engineering explained channel has a vid on oil viscosity. I was using 0w40 because I had done some research on oil viscosity. And after I watched hi vid I was reassured I was using a good viscosity for my trailblazer

[@KevinNadeau]

@@soundwavesaudio1 👍